Compressive Residual Stress Optimization in Laser Peening of a Curved Geometry

Author:  Vasu, Grandhi
Source:  Conf Proc 2011: ICSP-11 South Bend, IN USA (pgs. 329-334)
Doc ID:  2011055
Year of Publication:  2011
Abstract:  
Abstract Laser Peening (LP) is a surface enhancement technique that can delay crack nucleation by inducing compressive residual stresses. High stress concentration along the curved portion of a structural component is a common cause for crack initiation, which can lead to fatigue failure. Most fatigue cracks nucleate near the surface and propagate into the component. A simulation model can be used to investigate the effects of LP on crack growth behavior in an efficient manner. In this work, a 3D finite element model is created using ABAQUS